Jay Mazelsky

Companies

• Insulet (United States)Board member Jul 2, 2026 to now¹
• Dentsply SironaBoard member May 24, 2023 to now²
• IDEXX Laboratories, Inc.Board member Nov 5, 2019 to now³
• IDEXX Laboratories, Inc.Chief executive officer Aug 7, 2019 to now⁴
• IDEXX Laboratories, Inc.President Aug 7, 2019 to now⁴
• IDEXX Laboratories, Inc.Executive Vice President Aug 16, 2012 to Feb 19, 2019⁵

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• IDEXX Laboratories, Inc. IDXX83,803 shares⁶$46.9M at $559.16Feb 27, 2026
• Dentsply Sirona XRAY61,669 shares⁷$540.3K at $8.76Jun 12, 2026
• IUInsulet (United States) PODD0 shares⁸Jul 2, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Jul 1, 2026Granted 1,355 shares of Insulet (United States)⁹
• Jun 12, 2026Bought 10,000 shares at $10.14 of Dentsply Sirona⁷
• Jun 12, 2026Granted 10,000 shares at $10.14 of Dentsply Sirona¹⁰
• Jun 3, 2026Granted 22,822 shares of Dentsply Sirona¹¹
• Feb 27, 2026Exercised options 197 shares at $505.53 of IDEXX Laboratories, Inc.⁶
• Feb 26, 2026Sold 2,589 shares at $663.04 of IDEXX Laboratories, Inc.⁶
• Feb 26, 2026Sold 1,000 shares at $662.16 of IDEXX Laboratories, Inc.⁶
• Feb 26, 2026Sold 1,200 shares at $661.10 of IDEXX Laboratories, Inc.⁶
• Feb 26, 2026Sold 2,859 shares at $659.75 of IDEXX Laboratories, Inc.⁶
• Feb 26, 2026Sold 3,660 shares at $658.92 of IDEXX Laboratories, Inc.⁶
• Feb 26, 2026Sold 2,860 shares at $657.84 of IDEXX Laboratories, Inc.⁶
• Feb 26, 2026Sold 1,343 shares at $656.85 of IDEXX Laboratories, Inc.⁶
• Feb 26, 2026Sold 1,488 shares at $655.85 of IDEXX Laboratories, Inc.⁶
• Feb 26, 2026Sold 1,111 shares at $654.63 of IDEXX Laboratories, Inc.⁶
• Feb 26, 2026Sold 1,171 shares at $653.68 of IDEXX Laboratories, Inc.⁶
• Feb 26, 2026Sold 1,669 shares at $652.49 of IDEXX Laboratories, Inc.⁶
• Feb 26, 2026Sold 1,095 shares at $651.49 of IDEXX Laboratories, Inc.⁶
• Feb 26, 2026Sold 1,281 shares at $650.67 of IDEXX Laboratories, Inc.⁶
• Feb 26, 2026Exercised options 23,326 shares at $141.60 of IDEXX Laboratories, Inc.⁶
• Feb 14, 2026Shares withheld for tax 915 shares at $629.35 of IDEXX Laboratories, Inc.¹²
• Feb 14, 2026Exercised options 1,099 shares of IDEXX Laboratories, Inc.¹²
• Feb 14, 2026Exercised options 958 shares of IDEXX Laboratories, Inc.¹²
• Jan 9, 2026Granted 395 shares of Dentsply Sirona¹³
• Oct 10, 2025Granted 360 shares of Dentsply Sirona¹⁴
• Aug 15, 2025Gift 1,051 shares of IDEXX Laboratories, Inc.¹⁵